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Asuswrt-Merlin on converted TM-AC1900 : Problems, upgrade path to 384.6

sami8519

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#26
Has anyone had a problem with their WAN stuck at 100 Mbps?

I have followed steps above and my TM-1900 is successfully running Merlin 384.8_2 (Indicating model RT-AC68P). I'm using an SB6183 connected via a CAT6 to Ethernet WAN port. I was seeing slow internet speeds and discovered that the router is stuck at 100 Mbps. The SysInfo page shows the WAN Link State at 10 Full Duplex.
View attachment 113898
I have experimented with several cables (all gigabit capable) and swapped to a genuine AC-1900P to verify that the modem and cabling is not the problem.

Does anyone have an idea on how to get up to gigabit over WAN? I'm not sure if this is a bug, configuration problem, or hardware issue. Thanks!
Is nat acceleration enabled in settings? Check LAN>>>>Switch Control and make sure CTF (Cut Through Forwarding) is enabled.
 

rbot

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#27
sami8519,

Nat Accel is set to Auto and showing "CTF (Cut Through Forwarding) is enabled."
 
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#28
@rbot : try reformatting the JFFS Partition, see post #21 (remove any connected USB drives from router first)

Have you tried setting to factory defaults and starting from scratch?
 

rbot

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#29
@jsfitz54 : I followed steps from post 21 in entirety. Reset and restored to factory default for Merlin. Problem persists. :(
 

sami8519

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#30
@rbot I don’t know if this is could be a cause but maybe worth a try. From this thread https://slickdeals.net/f/9330575-as...900-dual-band-gigabit-router-59-free-shipping

  • Avoid CFE 1.0.2.5 from the RT-AC68P, as the newest Asus firmwares (3.0.0.4.384.20624 and later) detect this on the TM-AC1900 and revert the mod. Instead, use CFE 1.0.2.0 US AiMesh; it was dumped from an actual RT-AC68U by user goggles99 at SNB. The CFE generator [pipeline.sh] by danielfeng has this version available”
  • I think you previously said you used the mod of ac1900P. Maybe you could try and reflash the mod mentioned above. Again don’t know if this it could be the cause but trying to help.
 

rbot

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#31
@sami8519 Thanks, I will give that a try and see if a CFE reload will fix things up. Thanks for sharing the link as well! Looks like a lot of good info there.
 
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Processor Intel i7 970 // Intel i7 2600K // Intel X5677 // Intel 950,930
Motherboard Asus Rampage III Formula // Asus P8P67 Deluxe // MSI Big Bang XPower // EVGA 758
Cooling Zalman CNPS9900MaxB // Zalman CNPS11X // Intel E75476 // Intel E75476
Memory GSkill 2133 12GB // Corsair V 2400 32GB // GSkill 2133 12GB // Corsair Dom 1600 12GB
Video Card(s) ASUS GTX1080 // MSI GTX1070 Quick Silver// EVGA SC GTX780 // EVGA ACX GTX770
Storage Samsung 850EVO,PlextorM5P, Samsung 830, 840P, 840E// Samsung 840P // Crucial M500 // Crucial M500
Display(s) HP w2207h
Case CoolerMaster Stacker 830se // Lian Li PC-9F // Lian Li PC-9F // In-Win server case IW-PP689
Audio Device(s) onboard
Power Supply Seasonic X 850w Gold// OCZ ZX850w // EVGA 850w G2 // PC Power & Cooling 910w
Mouse Logitech G9
Keyboard Dell
Software W10Pro 1809/W10Pro /W10Pro /W10Pro

snickerpop

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#33
This whole thing is kind of confusing. Especially with merlin acting like the whole upgrade isn't possible.

Anyways I found out if your just starting out and manage to get to
373 or so you need to update to RT-AC68U_378.55_0.zip before doing anything in this post.
 
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